//This file is a part of StoragePlug for Minecraft.
//http://code.google.com/p/minecraft-storageplug/
//StoragePlug is Copyright (C) 2011 Christopher Smith
//Released under the MIT license:
//
//Permission is hereby granted, free of charge, to any person obtaining a copy
//of this software and associated documentation files (the "Software"), to deal
//in the Software without restriction, including without limitation the rights 
//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//copies of the Software, and to permit persons to whom the Software is
//furnished to do so, subject to the following conditions:
//
//The above copyright notice and this permission notice shall be included in
//all copies or substantial portions of the Software.
//
//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
//FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
//DEALINGS IN THE SOFTWARE.
//
//Related to Minecraft Copyright (C) 2009-2011 Mojang http://www.minecraft.net/

package net.minecraft.storageplug;

import java.io.IOException;

import net.minecraft.src.Chunk;
import net.minecraft.src.ChunkLoader;
import net.minecraft.src.IChunkLoader;
import net.minecraft.src.NBTTagCompound;
import net.minecraft.src.SaveOldDir;
import net.minecraft.src.World;

public class SpChunkLoader
	implements IChunkLoader
{
	final SaveOldDir sod;
	final int dimension;
	
	public SpChunkLoader(SaveOldDir saveOldDir, int dimension)
	{
		sod = saveOldDir;
		this.dimension = dimension;
	}
	
	@Override
	public Chunk loadChunk(World world, int x, int z)
		throws IOException
	{
		try
		{
            DataTree dt = sod.provider.readDataTree(new Key.Chunk(dimension, x, z));
			
			if(dt == null)
				return null;
            
			Chunk chunk = ChunkLoader.loadChunkIntoWorldFromCompound(world, dt.asNbtCompound());
			chunk.func_25083_h();
			return chunk;
		} catch(Exception e)
		{
			throw new IOException(e);
		}
	}
	
	@Override
	public void saveChunk(World world, Chunk chunk)
		throws IOException
	{
		try
		{
			NBTTagCompound nbt = new NBTTagCompound();
			ChunkLoader.storeChunkInCompound(chunk, world, nbt);
			sod.provider.writeDataTree(new DataTree(nbt), new Key.Chunk(dimension, chunk.xPosition, chunk.zPosition));
		} catch(Exception e)
		{
			throw new IOException(e);
		}
	}

	@Override
	public void saveExtraChunkData(World world, Chunk chunk)
		throws IOException
	{
		//noop
	}

	@Override
	public void func_661_a()
	{
		//noop
	}

	@Override
	public void saveExtraData()
	{
		//noop
	}
}